Device for reducing nitrogen and phosphorus emission of farmland

Abstract

The utility model provides a device for reducing nitrogen and phosphorus emission in farmland, which comprises a water collecting channel, an overflow port is arranged on the side of the water collecting channel, a flow guide component is arranged at the overflow port and communicated with the inner side and the outer side of the water collecting channel, a flow guide inclined plane is arranged at the bottom of the water collecting channel, and a water collecting hole is arranged at the bottom end of the flow guide inclined plane. The water collecting hole is communicated with the treatment pond through a conveying assembly, a first treatment cavity and a second treatment cavity are formed in the treatment pond, and the first treatment cavity and the second treatment cavity are each provided with a discharging assembly; by arranging the flow guide assembly, water containing nitrogen and phosphorus generated due to irrigation or rainfall in the farmland can be discharged into the water collecting channel, then conveyed into the treatment pond through the conveying assembly, treated by the first treatment cavity and the second treatment cavity to reduce the content of nitrogen and phosphorus in the water and finally discharged, and nitrogen and phosphorus discharge of the farmland is effectively reduced; the pollution to the natural environment caused by excessive emission of nitrogen and phosphorus is avoided.

Description

Technical Field

[0001] The utility model relates to the field of agriculture, in particular to a device for reducing nitrogen and phosphorus emissions in farmland. Background Technique

[0002] China is the largest fertilizer consumer in the world. According to statistics, the fertilizer application amount in China reached 579 million tons in 2018, among which the proportion of nitrogen fertilizer was about 60%, and the proportion of phosphorus fertilizer was about 20%. However, the fertilizer utilization rate in China is only 30%-40%, far lower than the world average level. This means that nearly 300 million tons of fertilizers are discharged into the environment every year, of which about 180 million tons are nitrogen fertilizers and about 60 million tons are phosphorus fertilizers.

[0003] Due to the extensive use of fertilizers containing nitrogen and phosphorus elements in agricultural production activities, a large amount of nitrogen and phosphorus elements enter the environmental system through surface runoff, soil leakage, atmospheric deposition and other channels, and are transformed, migrated and accumulated among different media, resulting in a series of ecological and environmental problems such as water eutrophication, soil acidification, air pollution, and biodiversity decline.

[0004] Since the farmland soil is rich in nitrogen and phosphorus elements, when irrigation is carried out or there is a large amount of precipitation, the water flow will wash out the nitrogen and phosphorus elements in the soil, resulting in nitrogen and phosphorus emission pollution. At present, there is a lack of special facilities for reducing nitrogen and phosphorus emissions in farmland. Therefore, there is an urgent need for a device for reducing nitrogen and phosphorus emissions in farmland that can solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for reducing nitrogen and phosphorus emissions in farmland to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the utility model provides the following scheme:

[0007] The utility model provides a device for reducing nitrogen and phosphorus emissions in farmland, including a water collecting channel. A water overflow port is arranged on the side of the water collecting channel. A diversion assembly is arranged at the water overflow port. The diversion assembly is communicated with the inner and outer sides of the water collecting channel. A drainage slope is arranged at the bottom of the water collecting channel. A water collecting hole is arranged at the bottom end of the drainage slope. The water collecting hole is communicated with a treatment tank through a conveying assembly. A first treatment chamber and a second treatment chamber are arranged in the treatment tank. Discharge assemblies are arranged in both the first treatment chamber and the second treatment chamber.

[0008] Preferably, the diversion assembly includes a diversion pipe. A filter screen is arranged at the outer end of the diversion pipe located at the water overflow port. An elbow is arranged at the inner end of the diversion pipe located at the water overflow port.

[0009] Preferably, a sludge accumulation tank is arranged on the drainage slope.

[0010] Preferably, the conveying assembly includes a conveying pipeline, and a valve and a water pump are provided on the conveying pipeline.

[0011] Preferably, adsorption balls are provided in the first treatment chamber.

[0012] Preferably, a stirring shaft is provided in the second treatment chamber. The stirring shaft is in transmission connection with a stirring motor, and stirring blades are provided on its surface.

[0013] Preferably, the discharging assembly includes a submersible pump, and the submersible pump is suspended and connected to a discharging hose.

[0014] The utility model has achieved the following beneficial technical effects compared with the prior art:

[0015] A device for reducing nitrogen and phosphorus emissions in farmland provided by the utility model includes a collecting channel. An overflow port is provided on the side of the collecting channel. A diversion assembly is provided at the overflow port. The diversion assembly is communicated with the inner and outer sides of the collecting channel. A drainage slope is provided at the bottom of the collecting channel. A water collecting hole is provided at the bottom end of the drainage slope. The water collecting hole is communicated with a treatment tank through a conveying assembly. A first treatment chamber and a second treatment chamber are provided in the treatment tank. Discharging assemblies are provided in both the first treatment chamber and the second treatment chamber. By providing the diversion assembly, the water containing nitrogen and phosphorus generated by irrigation or precipitation in the farmland can be discharged into the collecting channel, and then conveyed into the treatment tank through the conveying assembly. After being treated in the first treatment chamber and the second treatment chamber, the nitrogen and phosphorus content in the water is reduced and finally discharged, effectively reducing the nitrogen and phosphorus emissions in the farmland and avoiding the pollution of the natural environment caused by excessive nitrogen and phosphorus emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of a device for reducing nitrogen and phosphorus emissions in farmland provided by the present utility model;

[0018] Figure 2 It is a cross-sectional view of the collecting channel in a device for reducing nitrogen and phosphorus emissions in farmland provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] The purpose of the present utility model is to provide a device for reducing nitrogen and phosphorus emissions in farmland to solve the problems existing in the prior art.

[0021] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Embodiment 1:

[0023] This embodiment provides a device for reducing nitrogen and phosphorus emissions in farmland, as Figure 1 and 2 shown, including a collecting water channel 1. An overflow opening 2 is provided on the side of the collecting water channel 1. A diversion assembly 3 is provided at the overflow opening 2. The diversion assembly 3 is communicated with both the inner and outer sides of the collecting water channel 1. A drainage slope 4 is provided at the bottom of the collecting water channel 1. A water collecting hole 5 is provided at the bottom end of the drainage slope 4. The water collecting hole 5 is communicated with a treatment tank 7 through a conveying assembly 6. A first treatment chamber 71 and a second treatment chamber 72 are provided in the treatment tank 7. Discharge assemblies 8 are provided in both the first treatment chamber 71 and the second treatment chamber 72.

[0024] As an implementation manner, the diversion assembly 3 includes a diversion pipe 31. A filter screen 32 is provided at the outer end of the diversion pipe 31 located at the overflow opening 2. An elbow 33 is provided at the inner end of the diversion pipe 31 located at the overflow opening 2. The filter screen 32 can prevent weeds and other substances in the farmland from entering the diversion pipe 31 and causing blockage.

[0025] As an implementation manner, a sedimentation tank 41 is provided on the drainage slope 4, which can deposit the sediment in the water, thereby reducing or avoiding the sediment from entering the treatment tank 7.

[0026] As an implementation manner, the conveying assembly 6 includes a conveying pipe 61. A valve 62 and a water pump 63 are provided on the conveying pipe 61.

[0027] As an implementation manner, adsorption balls 73 are provided in the first treatment chamber 71. It can be a plastic sphere containing adsorption fillers, which can float in the water and adsorb nitrogen and phosphorus elements in the water.

[0028] As an implementation manner, a stirring shaft 74 is provided in the second treatment chamber 72. The stirring shaft 74 is in transmission connection with a stirring motor 75, and stirring blades 76 are arranged on its surface. When the content of nitrogen and phosphorus elements in water is too high, traditional physical adsorption means cannot effectively adsorb nitrogen and phosphorus elements. At this time, treatment can be carried out through a chemical treatment agent. By adding the chemical treatment agent and using the stirring blades 76 for rapid mixing, after the substances after the reaction settle, the upper clear water can be discharged.

[0029] It should be noted that in practical applications, the first treatment chamber 71 and the second treatment chamber 72 can be used separately or in combination.

[0030] As an implementation manner, the discharge assembly 8 includes a submersible pump 81. The submersible pump 81 is suspended and connected to a discharge hose 82, which is convenient for adjusting the position of the submersible pump 81 according to the water level.

[0031] The present utility model provides a device for reducing nitrogen and phosphorus emissions in farmland. By arranging a diversion assembly, the water containing nitrogen and phosphorus generated by irrigation or precipitation in the farmland can be discharged into a water collecting channel, and then transported to a treatment tank by a conveying assembly. After being treated in the first treatment chamber and the second treatment chamber to reduce the nitrogen and phosphorus content in the water and finally discharged, the nitrogen and phosphorus emissions in the farmland are effectively reduced, and the pollution of the natural environment caused by excessive nitrogen and phosphorus emissions is avoided.

[0032] The present utility model uses specific examples to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A device for reducing nitrogen and phosphorus emissions in farmland, characterized in that: It includes a water collecting channel, an overflow outlet is provided on the side of the water collecting channel, a diversion component is provided at the overflow outlet, the diversion component is communicated with the inner and outer sides of the water collecting channel, a drainage slope is provided at the bottom of the water collecting channel, a water collecting hole is provided at the bottom end of the drainage slope, and the water collecting hole is communicated with a treatment tank through a conveying component. A first treatment chamber and a second treatment chamber are provided in the treatment tank, and discharge components are provided in both the first treatment chamber and the second treatment chamber.

2. The device for reducing nitrogen and phosphorus emissions from farmland according to claim 1, wherein: The diversion component includes a diversion pipe, a filter screen is provided at the outer end of the diversion pipe located at the overflow outlet, and an elbow is provided at the inner end of the diversion pipe located at the overflow outlet.

3. The device for reducing nitrogen and phosphorus emissions from farmland according to claim 1, wherein: A sludge accumulation groove is provided on the drainage slope.

4. The device for reducing nitrogen and phosphorus emissions from farmland according to claim 1, wherein: The conveying component includes a conveying pipe, and a valve and a water pump are provided on the conveying pipe.

5. The device for reducing nitrogen and phosphorus emissions from farmland according to claim 1, characterized in that: Adsorption balls are provided in the first treatment chamber.

6. The device for reducing nitrogen and phosphorus emissions from farmland according to claim 1, characterized in that: A stirring shaft is provided in the second treatment chamber, the stirring shaft is in transmission connection with a stirring motor, and stirring blades are provided on its surface.

7. The device for reducing nitrogen and phosphorus emissions from farmland according to claim 1, characterized in that: The discharge component includes a submersible pump, the submersible pump is suspended and connected to a discharge hose.

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